Malicious PDF — malware analysis report

Static analysis result for SHA-256 afa72f739647690c…

MALICIOUS

PDF

187.0 KB Created: 2015-07-23 20:24:48 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a682a92d1c3bafcae3fbf4a8bc7eae5e SHA-1: 8c9bcc71ff416ffedbca979f16556b2216fe8419 SHA-256: afa72f739647690c52a4c66cefab8fc3f12ce46a9976c50d850d0d2fb958e9e1
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to botcraftman.ru. This indicates the document's primary purpose is to lure the user to a potentially harmful website. No scripts were extracted, and the document body was truncated, limiting further analysis of the exact lure. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 2

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://botcraftman.ru/?lip&keyword=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B8%D0%B3%D1%80%D1%83+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+gta+%D0%BF%D0%B0%D1%80%D0%BA%D1%83%D1%80&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184526_zvuk_mela_po_doske_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184522_ct_po_fizike_2015_zadaniya.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184418_novaya_forma_mchs_dlya_fotoshopa.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002476e.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2476E 3556 bytes
font_01_sfnt_off000254f1.bin
c55c0518e0dab1227d90c60bfc12c7985e2882eeed7b49d6ecc3fdf6e913e23d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x254F1 15012 bytes
font_02_sfnt_off00028380.bin
595326ac895bfee11418e32fd6b109954b89d1077e8c18b111f7c7de2cb77244		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28380 14576 bytes
font_03_sfnt_off0002ae91.bin
78b0c5ad69765169ae93a9b063397323a4f100590eaea95de0253312c33e57de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AE91 6840 bytes
font_04_sfnt_off0002c254.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C254 6084 bytes
font_05_sfnt_off0002d1e9.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D1E9 3752 bytes

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